Method of making scissors



Jan. 13, 1948. w. HARTKOPF METHOD OF MAKING SCISSORS 2- Sheets-Sheet 1INVENTOR.

, William Hartko pf Filed June 4, 1945 ATTO L ESS Jan. 13, 1948. w.HARTKOPF 2,434,268

METHOD OF MAKING SCISSORS Filed June 4, 1945 2 Sheets-Sheet 2 r/ 20 L9 M21 15 7 K r A r v 73 10 Z INVENTOR. William Hart/m ATTORNEHS PatenteclJan. 13, 1948 UNITED STATES PATENT OFFICE METHOD OF MAKING SCISSORSWilliam Hartkopf, East Orange, N. J.

Application June 4, 1945, Serial No. 597,523

This invention relates to scissors and to the method of manufacturingsame, and has for one of its objects the provision of the method andmeans whereby scissor blades may be punched and a shoulder provided onthe blank simultaneously with the punching operation.

Another object of the invention is the manufacture of such a scissorblade blank in a single blanking and bending operation, said blank beingadapted for use both as the right and left blade of the scissors.

Another object of the invention is the provision of an improved methodof producing scissors in which the maximumsimplicity of manufacturingoperation is obtained.

Other objects and advantages will appear as the nature of the inventionis better understood, the invention consisting substantially in thenovel arrangement and co-relation of parts herein fully described, andillustrated in the acccmpanyin drawings, wherein similar referencecharacters are used to describe corresponding parts throughout theseveral views, and then finally pointed out and specifically defined andindicated in the appended claim.

The disclosure made the basis for exemplifying the present inventiveconcept suggests a practical embod ment thereof, but the invention isnot to be restricted to the exact details of this disclosure, and thelatter, therefore, is to be understood from an illustrative, rather thana restrictive standpoint.

In accordance with a preferred embodiment of the inventive concept, theinvention consists in the provision of a scissor blade in which ashoulder is produced simultaneously with the blanking operation of thesaid blade, the shoulder being so arranged as to adapt the blade to beused with a second like blade to form a pair of scissors.

In the drawings: 7

Figure 1 is a top plan view of the female portion of a blanking dieshowing a sheet of material passing therethrcugh from which the blanksare being formed;

Figure 2 is is a longitudinal sectional view through the die, taken online 2-2, Figure 1, and showing the male portion of the die or punch inposition for blanking a scissor blade;

Figure 3 is a cross sectional view taken on line 3-3 of Figure 2;

Figure 4 is a perspective in inverted position of the blanking punch;

Figure 5 is a top plan view of a scissor blade blank;

1 Claim. (01. 76-104) Figure 6 is a side elevation thereof looking fromthe bottom of Figure 5; and

Figure 7 is a plan view of a completed pair of scissors.

Referring now to the drawings in detail, In indicates the die bed blockor body having an opening II therein which conforms to the shape of ascissor blade to be punched. Directly above the said body and spacedtherefrom by means of metal strips I2 is a die plate l3 having a cutoutl4 which is of the same general contour as that of the opening H in thebody. If desirable the die-plate opening or cutout l4 may be relieved asat l5 (see Fig. 1). The plate l3 and strips l2 may be secured to the diebed by any suitable means such as, for instance, screws H5.

The thickness and spacing of the metal strips l2 provide a passageway ITfor a sheet of material I8 from which the scissor blades are to beblanked.

The blanking punch l9 includes a portion 20 adapted to be secured tomovable plunger 2| of a punch press by any suitable conventional meansnot shown. Extending from the portion I9 is the cutting portion 2|having a raised or shoulder forming portion 22.

On the downward stroke of the press plunger 2| the raised punch portion2| first contacts the metal sheet I8 and bends the corresponding area ofthe sheet l8 downwardly as the plunger proresses to move down, thesevering of the blank 23 commencing after contact between the rear orrelieved portion 24 of the said punch and the sheet I8 is established,and upon further downward movement of the punch the blank 23 iscompletely severed from the sheet l8 and falls through the opening I Iin the die ID.

The above described action produces a shoulder 25 on the blade, saidshoulder being placed at such an angle as to be in juxtaposed positionto the angular side edge 26 of a like blade when inverted and assembledtherewith to form a pair of scissors and the said scissors are in closedposition. All piercing and finishing operations may be performed at anysuitable time .after blanking.

From the foregoing, it will be seen that with the improved method hereindescribed, a pair of scissors may be produced very efiiciently and at alow cost.

What is claimed is:

The method of forming an integral scissor blade and handle of eventhickness from sheet material, which comprises the steps of placing thesheet in a die, substantially uniformly de- 3 pressing the blade portionof said sheet in relation to the handle portion thereof to form ashoulder at the juncture of blade and handle portions, and to sever theblade portion from the sheet, then while in the same die pressingagainst the handle portion to sever the handle portion from the sheetwhile continuing to press against the blade portion until the formedintegral scissor blade and handle is pressed out of the sheet, saidpressed out scissor blade rand handle having a shoulder whih is sopositioned as to adapt the blade to be used with another identical bladeto form a pair of scissors.

WILLIAM REFERENCES orrjEi) The following references are of record in thefile of this patent:

Number Number UNITED STATES PATENTS Name Date 'I'olputt Oct. 24, 1916Dixon et a1 June 24, 1930 Kimmel Nov. 6, 1934 Martin Nov. 5, 1940 BergSept. 22. 1914 Brangs Oct. 5. 1937 Driest Oct. 13, 1925 Boyd Feb. 25,1930 Adair Aug. 1, 1876 Jacobs Feb. 12, 1935 Sheridan Dec. 26, 1882Mallory May 17, 1921 Mallory Aug. 12, 1924 Jacoby Mar. 5, 1918 FOREIGNPATENTS Country Date Germany Nov. 28, 1909

